ICD-10 Code A50.07 – Early mucocutaneous congenital syphilis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A50.07 – Early mucocutaneous congenital syphilis
What it is
A50.07 identifies early congenital syphilis with mucocutaneous involvement in an infant. Use it when the infection is present early in life and affects skin or mucous membranes.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include rash, mucous membrane lesions, or other early signs of congenital syphilis noted in the newborn or young infant.
When to use this code
Use this code when the provider documents early congenital syphilis with mucocutaneous manifestations. It fits cases where the diagnosis is confirmed or clearly stated in the record. If the chart only says congenital syphilis without mucocutaneous involvement, check documentation before coding.
Do not use for
Do not use it for late congenital syphilis or for congenital syphilis without mucocutaneous findings. If the record is nonspecific, check documentation rather than assuming A50.07.
Coding tip
Code the documented stage and manifestation together; do not infer mucocutaneous involvement from a general syphilis diagnosis.